Carbureter for explosive-engines.



PATENTED JAN. '7, 1908.

A. A. LONGUEMARE. GARBURETER FOR BXPLOSIVE ENGINES.

APPLICATION FILED NOV. 11, 1905.

ADELE AMELIE LONGUEMARE, or PARIS, FRANCE.

CARBURETER FOR EXPLOSIVE-ENGINES.

Specification of Letters Patent.

Patented J an. 7, 1908.

Application filed November 11. 1905- Serial No. 286378.

To all whom it may concern:

Be it known that I, ADELE AMELIE LONGUEMARE, a citizeness of theRepublic of France, residing at Paris, in France, have invented certainnew and useful Improvements in or Relating to Carbureters forExplosion-Engines, of which the following is a specification.

, This invention relates to a carbureter in which additionalintroduction of a quantity of fresh air required for the properformation of the explosive mixture is effected, for the initialformation of the mixture, by means of a valve surrounding in an annularmanner, the ordinary air inlet nozzle, the lift of which valve for sulementary admission of air can be regulate by means of a stop operatedas desired.

In the accompanying drawing ;Figure 1 is a vertical sectlon of acarbureter according to this invention, the regulating part of thesupplementary air inlet valve being shown in the positioncorrespondingto that of complete closing of the said valve. Figs. 2, 3,and 4 are sectional elevations of the valve with its regulating part infour principal positions: complete and maintamed closing (Fig. 2),automatic and regulated working (Fig. 3), complete automatic working(Fig. 4 full lines), complete maintained opening (Fig. 4 dotted).

According to this construction, the doubleconical choke tube a of wellknown construction, in the interior of which the combustible mixture isproduced, is combined with a valve 1) surrounding in an annular mannerthe said choke tube a, so that it can slide with a slight amount offriction in the cylindrical body Z of the carbureter. In thisconstruction the double-conical choke tube a is pro-' vided at its largelower base with a sleeve m surrounding the tubular body a of theatomizer pipe 7', and the said large base is provided with a series ofholes 11 freely admitting into the interior of the choke tube a, airwhich penetrates into the carbureter through the bottom openings 0 madein its corresponding plate.

The seat surface of the additional valve b is constituted by the angleformed by a reduced cylindrical portion (7 with which it is provided inthe center of its height. In the position of rest of the valve 1), thesaid angle rests against the outer circumference of the 5 double conicalchoke tube a along a circle situated near its large base.

The valve 1) is forced against its seat by the tension of a weak springresting, on the one hand against the interior of the upper collar of thesaid valve, and, on the other hand,

against the bottom surface of the cover of the casing Z of thecarbureter.

In the annular hollow space left between the two collars s of the valve1), which is thus made into a piston of the carbureter, and at a pointof the annulus or reduced portion (1, can swing an arm 8 secured to oneof the ends of a pin f. The latter is mounted in a plug 19 screwed intothe body 1 of the carbureter and carries at its outer end (relatively tothe said carburetor), another arm g which can be operated by anysuitable gear, so as to produce oscillation of the arm e, in order tovertical downward position (Figs. 1 and 2), the arm e rests with its endagamst the bottom collar .9 of the valve 1), so as to hold it appliedagainst its seat h formaintaining it completely closed. The arm e placedobliquely as in Fig. 3, enables the valve 6 to bring it into any desiredposition. In its lift to a limited extent under the influence of a thesuction, the result being regulation of the admission of additional air.

. The arm 6, placed horizontally as in Fig. 4, enables the valve 1) toact in an absolutely automatic manner under the 'action of the suction,from its closing up to its maximum openin Finally, the arm placedvertically upwar s, as shown dotted in Fig. 4, maintains the valve inits maximum opening po: sition. It will be seen from this arrangementthat if the valve 1) is secured to its seat It by means of the arm e(Figs. 1 and 2) the reduction of pressure which takes place in thesuction pipe 7c, is transmitted fully into.

the double conical choke tube a and acts with its full force on the fuelescaping from the nozzle 9', as well'as on the column of air enteringthrough the openings 0 and '5, any other admisslon of additional airbeing precluded'.

If it is desired to obtain a weaker explosive mixture, without howeveraltering the volby the space separating it at that moment from its seat.A

It must be pointed out that any additional air does not increase thesupply of combustible liquid but on the contrary lessens the same sinceit diminishes the volume passing through the said choke tube.

In order to make the admission'of air perfectly automatic, it issufficient, as already stated, to place the arm e horizontally as shownin full in Fig. 4.

What I claim as my invention and .desire to secure by Letters Patentis 1. In a carbureter the combination of an atomizer for the fuel, achoke tube surrounding the atomizer said choke tube comprising thefrusta of two hollow cones connected by their smaller ends, a valve seat formed by the base of the lower frustum, a supplemental air valveadapted to fit the'valve seat on the choke tube, an inclosingcasingsurrounding the air valve, a helical spring arranged between the top ofthe valve and the casing and adapted to press the valve upon its seat,said spring being capable of being overcome by a reduction of pressurewithin the casing, and means for controlling the movement of the valvesubstantially as set forth.

2. In a carbureter the combination of an atomizer for the fuel, a choketube surrounding the atomizer said choke tube comprising the frusta oftwo hollow cones connected by their smaller ends, a valve seat formed bythe base of the lower frustum, a supplemental air valve comprising ahollow piston having an annular internal projection said projectionbeing adapted to fit the valve seat on the choke tube, an inclos'ingcasing surrounding the air valve, a helical spring arranged between thetop of the valve and the casing and adapted to press the valve upon itsseat, said spring being capable of being overcome by a reduction ofpressure within the casing and means for controlling the movement of thevalve substantially as set forth. 1

3. In a carbureter the combination of an atomizer for the fuel, a choketube surround ing the atomizer said choke tube comprising the frusta oftwo hollow cones connected by their smaller ends, a valve seat formed bythe base of the lower frustum, a supplemental air valve comprising ahollow piston having a reduced cylindrical portion forming an externalannular groove and an internal projection, said projection being adaptedto 't the valve seat on the choke tube, an inclosing'casing surroundingthe air valve, a

helical spring arranged between the top of the valve and the casing andadapted to press the valve upon its seat, said spring being capable ofbeing overcome by a reduction of pressure within the casing, a stop-armadapted to engage the external annular groove of the hollow pistonforming the air valve, a pin carrying the said stop-arm, a bearing forthe pin, and an operating arm on the outer end of the pin, substantiallyas set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ADELE AMELIE LONGUEMARE.

Witnesses:

HANSON O. COKE, GEORGES BONNEVIL.

